In a hard cap with no exceptions, structure is the only flexibility, and every tool moves a charge through time but never erases it.
The cap hit is the sum of the base salary plus the prorated bonus plus the roster, workout, likely-to-be-earned, and per-game bonuses, and it is almost never the cash in a given year, because bonus proration and backloaded base salaries decouple the two. There is no limit on the actual cash a team spends.
The cap engine also carries the top-51 rule (only the top 51 hits count in the offseason, the top-51-to-53 jump a season-start event), the 89 percent four-year cash spending floor, unused-space carryover, and the cap holds (the draft-pick pool, the tags, the tenders) that occupy space until they resolve. Cap figures held in the Pro Cap Reference, v0 current-as-of. The cap is an accounting ledger, and the cash-versus-cap gap is a team's spending philosophy made visible.
Illustrative on the real salary-cap layer (the hard cap, the cap hit versus the cash, the cash-versus-cap signature, the top-51 rule, the floor, carryover, and holds). Composite team, cap figures held in the Reference.
Because the cap is hard, all the flexibility lives in how a contract is structured, and the core mechanic is signing-bonus proration. The structural tools all lean on it to move a cap charge through time.
Proration is the decoupling engine and the other tools lean on it, but the five-year cap is a hard limit, which is why void years exist and why the math bites when a player leaves early. The engine computes the space created and the charge committed in the same read. The structure is a set of levers for moving charges through time, and every lever has a future end.
Illustrative on the real contract-structure layer (proration and the five-year rule, backloading, void years, restructures, and extensions as tools that move charges through time, the value test that names the borrow). Composite contract, demonstration figures.
Cost is a structured object across the years, not a single number. A favorable current cap hit hiding a punishing future one is not cheap, so the engine prices cost across the whole contract, and the timing of the exit shapes the tail.
A contract engineered to look cheap this year has a tail, and the engine surfaces it at signing rather than at the cut. The surplus roster-building chases is destroyed by a structure that borrows past a player's decline, so the cost side of surplus is always the structured cost across the years. You can time a charge, but you cannot erase it.
Illustrative on the real dead-money and cost-shape layer (dead money as the accelerated proration a team keeps, cost as a structured object across the years, the pre- and post-June-1 timing, the retention and surplus tools on the same machinery). Composite contract, figures held in the Reference.
Time the charge if it serves the plan, but never mistake the timing for erasing it, because the bill always lands.
Cap and Contracts reads the hard-cap ledger, separates the cap hit from the cash, prices every structural tool as a borrow against the future, and surfaces the dead-money tail at signing, so a team sees the whole shape of a contract's cost across the years.